Numerical models of tectonic deformation with visco-elasto-plastic rheology

  • 创建时间: 2015-11-12
报告人:台湾中央研究院地球科学研究所谭谔博士,助研究员 报告时间:2015.11.24下午3:00-5:00 报告地点:中国科学院大学计算地球动力学重点室会议室(科研楼西侧1楼106室) 报告题目「Numerical models of tectonic deformation with visco-elasto-plastic rheology」 摘要: The acquisition of new data has led to a paradigm shift in the understanding of the tectonic and thermal evolution along rifted and convergent margins. This situation generated an urgent need for accurately modeling the evolution of continental break-up and subduction zones in the lithosphere. Moreover the technique must be able to solve for nonlinear visco-elasto-plastic flow in the ductile lithosphere over the tens of millions years, and need to allow for the self-consistent description of fault propagation over narrow shear zones. I developed a new 3-D numerical code that will solve the quasi-static equilibrium of the equation of motion with an elasto-plastic (pressure dependent plasticity) and visco-plastic rheology and use this code to develop and validate a parameterization of the elasto-plastic rheology necessary to simulate the growth and evolution of natural faults. Modeling results on subduction, rifting, and collision will be presented.